1. посчитайте систему уравнений: {X+y = 14| х2 + y2 = 100​

(6; 8); (8; 6)

{ x + y = 14

{ x^2 + y^2 = 100

Решаем подстановкой

{ y = 14 - x

{ x^2 + (14 - x)^2 = 100

x^2 + x^2 - 28x + 196 = 100

2x^2 - 28x + 96 = 0

x^2 - 14x + 48 = 0

(x - 6)(x - 8) = 0

x1 = 6; y1 = 14 - 6 = 8

x2 = 8; y2 = 14 - 8 = 6